Multi-screen video playback system

Abstract

Exemplary embodiments of the invention provide a multi-screen video playback system which enables synchronized video playback, and at the same time enables irregular playback such as color processing, contents change. According to exemplary embodiments, a multi-screen video playback system includes a plurality of rendering units RU1 through RU4 which are connected to LAN as a network and output video data to a plurality of display devices D1 through D4; a function which is connected to LAN and distributes timing information to the rendering units RU1 through RU4 by simultaneous transmission; a timing server TS which generates the irregular playback control information to enable irregular playback, such as color correction and contents change to the video data, in a plurality of rendering units RU1 through RU4 which output video data to each corresponding display device of the plurality of display devices D1 through D4; and video data storage devices S1 through S4 to store video data to be reproduced.

Description

BACKGROUND [0001] Exemplary embodiments of the present invention relate to a multi-screen video playback system suitable as a video playback device in a large multi-screen display, and the like, to a video playback method in a multi-screen video playback system, to a timing server, a video distribution server V and a rendering unit used in a multi-screen video playback system, and to a display device to constitute a multi-screen display. [0002]FIG. 30 is a schematic showing a multi-screen display. This multi-screen display D is a display device which constitutes one large screen by combining a plurality of display devices D1 through D4, such as a monitor and a projector, as shown in FIG. 30. The multi-screen video playback system is a video playback device to output a video signal which is inputted to each of the display devices D1 through D4, respectively, in such a multi-screen display D. [0003] In this multi-screen video playback system, as disclosed in the related art, a large s...

AI Technical Summary

Benefits of technology

[0017] Then, exemplary embodiments of the present invention have been made to address and / or solve these and / or other problems. Further, exemplary embodiments provide a multi-screen video playback system, which is a simple system which does not need to acquire the absolute time, can perform a synchronized and long hours of video playback easily, and also enables various video processing, such as color processing and resolution conversion, through the network. Exemplary embodiments further provide a video playback method in the multi-screen video playback system; a timing server, a video distribution server V and a rendering unit used for a multi-screen video playback system; and a display device to constitute a multi-screen display.

[0159] According to such a display device, by preparing the network and the video distribution server according to the above (35), separately, the multi-screen video device can be constituted easily. In addition, if the timing server is provided separately from the video distribution server, the multi-screen video device can be easily constituted by preparing the timing server and the like along with the video distribution server.

Problems solved by technology

For this reason, there are problems that the system becomes on a large scale, the handling thereof also becomes complicated, and the cost reduction thereof is not easy.

The memory is generally expensive, and even for video data of several minutes, it will be expensive to develop all of them to the memory.

Further, when it comes to video data of a movie which lasts for several hours, it is not easy to develop all of them to the memory.

Moreover, also in the synchronized playback method disclosed in Japanese Laid Open Patent Publication No. 2003-235027, since it is necessary to communicate with the time server like the above-described in Japanese Laid Open Patent Publication No. 2002-369163, there are problems that the system becomes on a large scale, its handling becomes also complicated, and its cost reduction is not easy.

Images